New models of gauge- and gravity-mediated supersymmetry breaking

Journal Article · Thu May 01 04:00:00 EDT 1997 · Physical Review, D

DOI:https://doi.org/10.1103/PhysRevD.55.5508· OSTI ID:562441

Poppitz, E ^[1]; Trivedi, S P ^[2]

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1. Enrico Fermi Institute, University of Chicago, 5640 South Ellis Avenue, Chicago, Illinois 60637 (United States)
2. Fermi National Accelerator Laboratory, P.O. Box 500, Batavia, Illinois 60510 (United States)

We show that supersymmetry breaking in a class of theories with SU(N){times}SU(N{minus}2) gauge symmetry can be studied in a calculable {sigma} model. We use the {sigma} model to show that the supersymmetry-breaking vacuum in these theories leaves a large subgroup of flavor symmetries intact, and to calculate the masses of the low-lying states. By embedding the standard model gauge groups in the unbroken flavor symmetry group we construct a class of models in which supersymmetry breaking is communicated by both gravitational and gauge interactions. One distinguishing feature of these models is that the messenger fields, responsible for the gauge-mediated communication of supersymmetry breaking, are an integral part of the supersymmetry-breaking sector. We also show how, by lowering the scale that suppresses the nonrenormalizable operators, a class of purely gauge-mediated models with a combined supersymmetry-breaking-cum-messenger sector can be built. We briefly discuss the phenomenological features of the models we construct. {copyright} {ital 1997} {ital The American Physical Society}

• Research Organization: Fermi National Accelerator Laboratory
• DOE Contract Number: AC02-76CH03000; FG02-90ER40560
• OSTI ID: 562441
• Journal Information: Physical Review, D, Journal Name: Physical Review, D Journal Issue: 9 Vol. 55; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
FLAVOR
GAUGE INVARIANCE
GRAVITATIONAL INTERACTIONS
SIGMA MODEL
STANDARD MODEL
SU GROUPS
SUPERSYMMETRY
SYMMETRY BREAKING